-er -ji eee eek eep eer ees eie eii eij eik eip eir eis eji ejp eke eki ekp ekr eks ep- epe epi epp epr eps ere eri erk erp err ers es- ese esi esk esp esr ess ie- iee iei iej iek iep ier ies iie iii iij iip iir iis ije iji ijk ijs ike iki ikk ikr iks ipe ipi ipp ipr ips ir- ire iri irj irk irp irr irs is- ise isi isj isk isp isr iss j-i jee jei jej jek jep jer jes jie jii jij jip jir jis jjj jjk jjp jjr jjs jkk jkp jkr jks jpe jpi jpj jpp jpr jps jri jrk jrp jrr jrs jse jsi jsj jsk jsp jsr jss ke- kee kei kek kep ker kes kie kii kij kik kip kir kis kje kji kjr kjs kke kki kkk kkp kkr kks kpe kpi kpk kpp kpr kps kri krk krp krr krs kse ksi ksk ksp ksr kss p-p pee pei pek pep per pes pie pii pij pik pip pir pis pji pjp pjs pke pki pkp pkr pks ppe ppi ppj ppk ppp ppr pps pre pri prk prp prr prs ps- pse psi psj psk psp psr pss re- ree rei rek rep rer res rie rii rik rip rir ris rjk rjp rjr rke rkk rkp rks rpe rpi rpk rpp rpr rps rri rrk rrp rrr rrs rse rsi rsj rsk rsp rsr rss se- see sei sej sek sep ser ses sie sii sij sik sip sir sis sje sji sjj sjk sjp sjr sjs sk- ske ski skj skk skp skr sks spe spi spk spp spr sps sr- sre sri srj srk srp srr srs ss- sse ssi ssj ssk ssp ssr sss